701 строка
21 KiB
C
701 строка
21 KiB
C
/*
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* fscher.c - Part of lm_sensors, Linux kernel modules for hardware
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* monitoring
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* Copyright (C) 2003, 2004 Reinhard Nissl <rnissl@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* fujitsu siemens hermes chip,
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* module based on fscpos.c
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* Copyright (C) 2000 Hermann Jung <hej@odn.de>
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* Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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* and Philip Edelbrock <phil@netroedge.com>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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/*
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* Addresses to scan
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*/
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static unsigned short normal_i2c[] = { 0x73, I2C_CLIENT_END };
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/*
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* Insmod parameters
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*/
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I2C_CLIENT_INSMOD_1(fscher);
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/*
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* The FSCHER registers
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*/
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/* chip identification */
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#define FSCHER_REG_IDENT_0 0x00
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#define FSCHER_REG_IDENT_1 0x01
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#define FSCHER_REG_IDENT_2 0x02
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#define FSCHER_REG_REVISION 0x03
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/* global control and status */
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#define FSCHER_REG_EVENT_STATE 0x04
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#define FSCHER_REG_CONTROL 0x05
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/* watchdog */
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#define FSCHER_REG_WDOG_PRESET 0x28
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#define FSCHER_REG_WDOG_STATE 0x23
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#define FSCHER_REG_WDOG_CONTROL 0x21
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/* fan 0 */
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#define FSCHER_REG_FAN0_MIN 0x55
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#define FSCHER_REG_FAN0_ACT 0x0e
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#define FSCHER_REG_FAN0_STATE 0x0d
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#define FSCHER_REG_FAN0_RIPPLE 0x0f
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/* fan 1 */
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#define FSCHER_REG_FAN1_MIN 0x65
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#define FSCHER_REG_FAN1_ACT 0x6b
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#define FSCHER_REG_FAN1_STATE 0x62
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#define FSCHER_REG_FAN1_RIPPLE 0x6f
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/* fan 2 */
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#define FSCHER_REG_FAN2_MIN 0xb5
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#define FSCHER_REG_FAN2_ACT 0xbb
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#define FSCHER_REG_FAN2_STATE 0xb2
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#define FSCHER_REG_FAN2_RIPPLE 0xbf
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/* voltage supervision */
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#define FSCHER_REG_VOLT_12 0x45
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#define FSCHER_REG_VOLT_5 0x42
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#define FSCHER_REG_VOLT_BATT 0x48
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/* temperature 0 */
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#define FSCHER_REG_TEMP0_ACT 0x64
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#define FSCHER_REG_TEMP0_STATE 0x71
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/* temperature 1 */
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#define FSCHER_REG_TEMP1_ACT 0x32
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#define FSCHER_REG_TEMP1_STATE 0x81
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/* temperature 2 */
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#define FSCHER_REG_TEMP2_ACT 0x35
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#define FSCHER_REG_TEMP2_STATE 0x91
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/*
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* Functions declaration
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*/
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static int fscher_attach_adapter(struct i2c_adapter *adapter);
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static int fscher_detect(struct i2c_adapter *adapter, int address, int kind);
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static int fscher_detach_client(struct i2c_client *client);
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static struct fscher_data *fscher_update_device(struct device *dev);
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static void fscher_init_client(struct i2c_client *client);
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static int fscher_read_value(struct i2c_client *client, u8 reg);
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static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value);
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/*
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* Driver data (common to all clients)
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*/
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static struct i2c_driver fscher_driver = {
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.driver = {
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.name = "fscher",
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},
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.id = I2C_DRIVERID_FSCHER,
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.attach_adapter = fscher_attach_adapter,
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.detach_client = fscher_detach_client,
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};
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/*
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* Client data (each client gets its own)
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*/
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struct fscher_data {
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struct i2c_client client;
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struct class_device *class_dev;
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struct mutex update_lock;
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char valid; /* zero until following fields are valid */
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unsigned long last_updated; /* in jiffies */
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/* register values */
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u8 revision; /* revision of chip */
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u8 global_event; /* global event status */
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u8 global_control; /* global control register */
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u8 watchdog[3]; /* watchdog */
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u8 volt[3]; /* 12, 5, battery voltage */
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u8 temp_act[3]; /* temperature */
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u8 temp_status[3]; /* status of sensor */
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u8 fan_act[3]; /* fans revolutions per second */
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u8 fan_status[3]; /* fan status */
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u8 fan_min[3]; /* fan min value for rps */
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u8 fan_ripple[3]; /* divider for rps */
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};
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/*
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* Sysfs stuff
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*/
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#define sysfs_r(kind, sub, offset, reg) \
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static ssize_t show_##kind##sub (struct fscher_data *, char *, int); \
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static ssize_t show_##kind##offset##sub (struct device *, struct device_attribute *attr, char *); \
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static ssize_t show_##kind##offset##sub (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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struct fscher_data *data = fscher_update_device(dev); \
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return show_##kind##sub(data, buf, (offset)); \
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}
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#define sysfs_w(kind, sub, offset, reg) \
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static ssize_t set_##kind##sub (struct i2c_client *, struct fscher_data *, const char *, size_t, int, int); \
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static ssize_t set_##kind##offset##sub (struct device *, struct device_attribute *attr, const char *, size_t); \
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static ssize_t set_##kind##offset##sub (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct fscher_data *data = i2c_get_clientdata(client); \
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return set_##kind##sub(client, data, buf, count, (offset), reg); \
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}
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#define sysfs_rw_n(kind, sub, offset, reg) \
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sysfs_r(kind, sub, offset, reg) \
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sysfs_w(kind, sub, offset, reg) \
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static DEVICE_ATTR(kind##offset##sub, S_IRUGO | S_IWUSR, show_##kind##offset##sub, set_##kind##offset##sub);
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#define sysfs_rw(kind, sub, reg) \
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sysfs_r(kind, sub, 0, reg) \
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sysfs_w(kind, sub, 0, reg) \
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static DEVICE_ATTR(kind##sub, S_IRUGO | S_IWUSR, show_##kind##0##sub, set_##kind##0##sub);
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#define sysfs_ro_n(kind, sub, offset, reg) \
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sysfs_r(kind, sub, offset, reg) \
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static DEVICE_ATTR(kind##offset##sub, S_IRUGO, show_##kind##offset##sub, NULL);
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#define sysfs_ro(kind, sub, reg) \
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sysfs_r(kind, sub, 0, reg) \
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static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
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#define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
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sysfs_rw_n(pwm, , offset, reg_min) \
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sysfs_rw_n(fan, _status, offset, reg_status) \
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sysfs_rw_n(fan, _div , offset, reg_ripple) \
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sysfs_ro_n(fan, _input , offset, reg_act)
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#define sysfs_temp(offset, reg_status, reg_act) \
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sysfs_rw_n(temp, _status, offset, reg_status) \
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sysfs_ro_n(temp, _input , offset, reg_act)
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#define sysfs_in(offset, reg_act) \
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sysfs_ro_n(in, _input, offset, reg_act)
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#define sysfs_revision(reg_revision) \
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sysfs_ro(revision, , reg_revision)
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#define sysfs_alarms(reg_events) \
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sysfs_ro(alarms, , reg_events)
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#define sysfs_control(reg_control) \
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sysfs_rw(control, , reg_control)
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#define sysfs_watchdog(reg_control, reg_status, reg_preset) \
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sysfs_rw(watchdog, _control, reg_control) \
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sysfs_rw(watchdog, _status , reg_status) \
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sysfs_rw(watchdog, _preset , reg_preset)
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sysfs_fan(1, FSCHER_REG_FAN0_STATE, FSCHER_REG_FAN0_MIN,
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FSCHER_REG_FAN0_RIPPLE, FSCHER_REG_FAN0_ACT)
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sysfs_fan(2, FSCHER_REG_FAN1_STATE, FSCHER_REG_FAN1_MIN,
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FSCHER_REG_FAN1_RIPPLE, FSCHER_REG_FAN1_ACT)
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sysfs_fan(3, FSCHER_REG_FAN2_STATE, FSCHER_REG_FAN2_MIN,
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FSCHER_REG_FAN2_RIPPLE, FSCHER_REG_FAN2_ACT)
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sysfs_temp(1, FSCHER_REG_TEMP0_STATE, FSCHER_REG_TEMP0_ACT)
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sysfs_temp(2, FSCHER_REG_TEMP1_STATE, FSCHER_REG_TEMP1_ACT)
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sysfs_temp(3, FSCHER_REG_TEMP2_STATE, FSCHER_REG_TEMP2_ACT)
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sysfs_in(0, FSCHER_REG_VOLT_12)
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sysfs_in(1, FSCHER_REG_VOLT_5)
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sysfs_in(2, FSCHER_REG_VOLT_BATT)
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sysfs_revision(FSCHER_REG_REVISION)
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sysfs_alarms(FSCHER_REG_EVENTS)
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sysfs_control(FSCHER_REG_CONTROL)
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sysfs_watchdog(FSCHER_REG_WDOG_CONTROL, FSCHER_REG_WDOG_STATE, FSCHER_REG_WDOG_PRESET)
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#define device_create_file_fan(client, offset) \
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do { \
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device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
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device_create_file(&client->dev, &dev_attr_pwm##offset); \
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device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
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device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
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} while (0)
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#define device_create_file_temp(client, offset) \
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do { \
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device_create_file(&client->dev, &dev_attr_temp##offset##_status); \
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device_create_file(&client->dev, &dev_attr_temp##offset##_input); \
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} while (0)
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#define device_create_file_in(client, offset) \
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do { \
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device_create_file(&client->dev, &dev_attr_in##offset##_input); \
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} while (0)
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#define device_create_file_revision(client) \
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do { \
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device_create_file(&client->dev, &dev_attr_revision); \
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} while (0)
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#define device_create_file_alarms(client) \
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do { \
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device_create_file(&client->dev, &dev_attr_alarms); \
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} while (0)
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#define device_create_file_control(client) \
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do { \
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device_create_file(&client->dev, &dev_attr_control); \
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} while (0)
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#define device_create_file_watchdog(client) \
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do { \
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device_create_file(&client->dev, &dev_attr_watchdog_status); \
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device_create_file(&client->dev, &dev_attr_watchdog_control); \
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device_create_file(&client->dev, &dev_attr_watchdog_preset); \
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} while (0)
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/*
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* Real code
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*/
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static int fscher_attach_adapter(struct i2c_adapter *adapter)
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{
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if (!(adapter->class & I2C_CLASS_HWMON))
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return 0;
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return i2c_probe(adapter, &addr_data, fscher_detect);
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}
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static int fscher_detect(struct i2c_adapter *adapter, int address, int kind)
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{
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struct i2c_client *new_client;
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struct fscher_data *data;
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int err = 0;
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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goto exit;
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/* OK. For now, we presume we have a valid client. We now create the
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* client structure, even though we cannot fill it completely yet.
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* But it allows us to access i2c_smbus_read_byte_data. */
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if (!(data = kzalloc(sizeof(struct fscher_data), GFP_KERNEL))) {
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err = -ENOMEM;
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goto exit;
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}
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/* The common I2C client data is placed right before the
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* Hermes-specific data. */
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new_client = &data->client;
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i2c_set_clientdata(new_client, data);
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new_client->addr = address;
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new_client->adapter = adapter;
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new_client->driver = &fscher_driver;
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new_client->flags = 0;
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/* Do the remaining detection unless force or force_fscher parameter */
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if (kind < 0) {
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if ((i2c_smbus_read_byte_data(new_client,
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FSCHER_REG_IDENT_0) != 0x48) /* 'H' */
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|| (i2c_smbus_read_byte_data(new_client,
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FSCHER_REG_IDENT_1) != 0x45) /* 'E' */
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|| (i2c_smbus_read_byte_data(new_client,
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FSCHER_REG_IDENT_2) != 0x52)) /* 'R' */
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goto exit_free;
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}
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/* Fill in the remaining client fields and put it into the
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* global list */
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strlcpy(new_client->name, "fscher", I2C_NAME_SIZE);
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data->valid = 0;
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mutex_init(&data->update_lock);
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/* Tell the I2C layer a new client has arrived */
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if ((err = i2c_attach_client(new_client)))
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goto exit_free;
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fscher_init_client(new_client);
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/* Register sysfs hooks */
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data->class_dev = hwmon_device_register(&new_client->dev);
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if (IS_ERR(data->class_dev)) {
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err = PTR_ERR(data->class_dev);
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goto exit_detach;
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}
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device_create_file_revision(new_client);
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device_create_file_alarms(new_client);
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device_create_file_control(new_client);
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device_create_file_watchdog(new_client);
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device_create_file_in(new_client, 0);
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device_create_file_in(new_client, 1);
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device_create_file_in(new_client, 2);
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device_create_file_fan(new_client, 1);
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device_create_file_fan(new_client, 2);
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device_create_file_fan(new_client, 3);
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device_create_file_temp(new_client, 1);
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device_create_file_temp(new_client, 2);
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device_create_file_temp(new_client, 3);
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return 0;
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exit_detach:
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i2c_detach_client(new_client);
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exit_free:
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kfree(data);
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exit:
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return err;
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}
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static int fscher_detach_client(struct i2c_client *client)
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{
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struct fscher_data *data = i2c_get_clientdata(client);
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int err;
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hwmon_device_unregister(data->class_dev);
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if ((err = i2c_detach_client(client)))
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return err;
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kfree(data);
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return 0;
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}
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static int fscher_read_value(struct i2c_client *client, u8 reg)
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{
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dev_dbg(&client->dev, "read reg 0x%02x\n", reg);
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int fscher_write_value(struct i2c_client *client, u8 reg, u8 value)
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{
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dev_dbg(&client->dev, "write reg 0x%02x, val 0x%02x\n",
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reg, value);
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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/* Called when we have found a new FSC Hermes. */
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static void fscher_init_client(struct i2c_client *client)
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{
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struct fscher_data *data = i2c_get_clientdata(client);
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/* Read revision from chip */
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data->revision = fscher_read_value(client, FSCHER_REG_REVISION);
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}
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static struct fscher_data *fscher_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct fscher_data *data = i2c_get_clientdata(client);
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mutex_lock(&data->update_lock);
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if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
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dev_dbg(&client->dev, "Starting fscher update\n");
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data->temp_act[0] = fscher_read_value(client, FSCHER_REG_TEMP0_ACT);
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data->temp_act[1] = fscher_read_value(client, FSCHER_REG_TEMP1_ACT);
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data->temp_act[2] = fscher_read_value(client, FSCHER_REG_TEMP2_ACT);
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data->temp_status[0] = fscher_read_value(client, FSCHER_REG_TEMP0_STATE);
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data->temp_status[1] = fscher_read_value(client, FSCHER_REG_TEMP1_STATE);
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data->temp_status[2] = fscher_read_value(client, FSCHER_REG_TEMP2_STATE);
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data->volt[0] = fscher_read_value(client, FSCHER_REG_VOLT_12);
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data->volt[1] = fscher_read_value(client, FSCHER_REG_VOLT_5);
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data->volt[2] = fscher_read_value(client, FSCHER_REG_VOLT_BATT);
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data->fan_act[0] = fscher_read_value(client, FSCHER_REG_FAN0_ACT);
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data->fan_act[1] = fscher_read_value(client, FSCHER_REG_FAN1_ACT);
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data->fan_act[2] = fscher_read_value(client, FSCHER_REG_FAN2_ACT);
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data->fan_status[0] = fscher_read_value(client, FSCHER_REG_FAN0_STATE);
|
|
data->fan_status[1] = fscher_read_value(client, FSCHER_REG_FAN1_STATE);
|
|
data->fan_status[2] = fscher_read_value(client, FSCHER_REG_FAN2_STATE);
|
|
data->fan_min[0] = fscher_read_value(client, FSCHER_REG_FAN0_MIN);
|
|
data->fan_min[1] = fscher_read_value(client, FSCHER_REG_FAN1_MIN);
|
|
data->fan_min[2] = fscher_read_value(client, FSCHER_REG_FAN2_MIN);
|
|
data->fan_ripple[0] = fscher_read_value(client, FSCHER_REG_FAN0_RIPPLE);
|
|
data->fan_ripple[1] = fscher_read_value(client, FSCHER_REG_FAN1_RIPPLE);
|
|
data->fan_ripple[2] = fscher_read_value(client, FSCHER_REG_FAN2_RIPPLE);
|
|
|
|
data->watchdog[0] = fscher_read_value(client, FSCHER_REG_WDOG_PRESET);
|
|
data->watchdog[1] = fscher_read_value(client, FSCHER_REG_WDOG_STATE);
|
|
data->watchdog[2] = fscher_read_value(client, FSCHER_REG_WDOG_CONTROL);
|
|
|
|
data->global_event = fscher_read_value(client, FSCHER_REG_EVENT_STATE);
|
|
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
|
|
|
|
#define FAN_INDEX_FROM_NUM(nr) ((nr) - 1)
|
|
|
|
static ssize_t set_fan_status(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
/* bits 0..1, 3..7 reserved => mask with 0x04 */
|
|
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x04;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->fan_status[FAN_INDEX_FROM_NUM(nr)] &= ~v;
|
|
fscher_write_value(client, reg, v);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_fan_status(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 0..1, 3..7 reserved => mask with 0x04 */
|
|
return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
|
|
}
|
|
|
|
static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
unsigned long v = simple_strtoul(buf, NULL, 10);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
|
|
fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
|
|
}
|
|
|
|
static ssize_t set_fan_div(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
/* supported values: 2, 4, 8 */
|
|
unsigned long v = simple_strtoul(buf, NULL, 10);
|
|
|
|
switch (v) {
|
|
case 2: v = 1; break;
|
|
case 4: v = 2; break;
|
|
case 8: v = 3; break;
|
|
default:
|
|
dev_err(&client->dev, "fan_div value %ld not "
|
|
"supported. Choose one of 2, 4 or 8!\n", v);
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
/* bits 2..7 reserved => mask with 0x03 */
|
|
data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] &= ~0x03;
|
|
data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] |= v;
|
|
|
|
fscher_write_value(client, reg, data->fan_ripple[FAN_INDEX_FROM_NUM(nr)]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_fan_div(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 2..7 reserved => mask with 0x03 */
|
|
return sprintf(buf, "%u\n", 1 << (data->fan_ripple[FAN_INDEX_FROM_NUM(nr)] & 0x03));
|
|
}
|
|
|
|
#define RPM_FROM_REG(val) (val*60)
|
|
|
|
static ssize_t show_fan_input (struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%u\n", RPM_FROM_REG(data->fan_act[FAN_INDEX_FROM_NUM(nr)]));
|
|
}
|
|
|
|
|
|
|
|
#define TEMP_INDEX_FROM_NUM(nr) ((nr) - 1)
|
|
|
|
static ssize_t set_temp_status(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
/* bits 2..7 reserved, 0 read only => mask with 0x02 */
|
|
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_status[TEMP_INDEX_FROM_NUM(nr)] &= ~v;
|
|
fscher_write_value(client, reg, v);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp_status(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 2..7 reserved => mask with 0x03 */
|
|
return sprintf(buf, "%u\n", data->temp_status[TEMP_INDEX_FROM_NUM(nr)] & 0x03);
|
|
}
|
|
|
|
#define TEMP_FROM_REG(val) (((val) - 128) * 1000)
|
|
|
|
static ssize_t show_temp_input(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_act[TEMP_INDEX_FROM_NUM(nr)]));
|
|
}
|
|
|
|
/*
|
|
* The final conversion is specified in sensors.conf, as it depends on
|
|
* mainboard specific values. We export the registers contents as
|
|
* pseudo-hundredths-of-Volts (range 0V - 2.55V). Not that it makes much
|
|
* sense per se, but it minimizes the conversions count and keeps the
|
|
* values within a usual range.
|
|
*/
|
|
#define VOLT_FROM_REG(val) ((val) * 10)
|
|
|
|
static ssize_t show_in_input(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%u\n", VOLT_FROM_REG(data->volt[nr]));
|
|
}
|
|
|
|
|
|
|
|
static ssize_t show_revision(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%u\n", data->revision);
|
|
}
|
|
|
|
|
|
|
|
static ssize_t show_alarms(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 2, 5..6 reserved => mask with 0x9b */
|
|
return sprintf(buf, "%u\n", data->global_event & 0x9b);
|
|
}
|
|
|
|
|
|
|
|
static ssize_t set_control(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
/* bits 1..7 reserved => mask with 0x01 */
|
|
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x01;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->global_control &= ~v;
|
|
fscher_write_value(client, reg, v);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_control(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 1..7 reserved => mask with 0x01 */
|
|
return sprintf(buf, "%u\n", data->global_control & 0x01);
|
|
}
|
|
|
|
|
|
|
|
static ssize_t set_watchdog_control(struct i2c_client *client, struct
|
|
fscher_data *data, const char *buf, size_t count,
|
|
int nr, int reg)
|
|
{
|
|
/* bits 0..3 reserved => mask with 0xf0 */
|
|
unsigned long v = simple_strtoul(buf, NULL, 10) & 0xf0;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->watchdog[2] &= ~0xf0;
|
|
data->watchdog[2] |= v;
|
|
fscher_write_value(client, reg, data->watchdog[2]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_watchdog_control(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 0..3 reserved, bit 5 write only => mask with 0xd0 */
|
|
return sprintf(buf, "%u\n", data->watchdog[2] & 0xd0);
|
|
}
|
|
|
|
static ssize_t set_watchdog_status(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
/* bits 0, 2..7 reserved => mask with 0x02 */
|
|
unsigned long v = simple_strtoul(buf, NULL, 10) & 0x02;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->watchdog[1] &= ~v;
|
|
fscher_write_value(client, reg, v);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_watchdog_status(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
/* bits 0, 2..7 reserved => mask with 0x02 */
|
|
return sprintf(buf, "%u\n", data->watchdog[1] & 0x02);
|
|
}
|
|
|
|
static ssize_t set_watchdog_preset(struct i2c_client *client, struct fscher_data *data,
|
|
const char *buf, size_t count, int nr, int reg)
|
|
{
|
|
unsigned long v = simple_strtoul(buf, NULL, 10) & 0xff;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->watchdog[0] = v;
|
|
fscher_write_value(client, reg, data->watchdog[0]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_watchdog_preset(struct fscher_data *data, char *buf, int nr)
|
|
{
|
|
return sprintf(buf, "%u\n", data->watchdog[0]);
|
|
}
|
|
|
|
static int __init sensors_fscher_init(void)
|
|
{
|
|
return i2c_add_driver(&fscher_driver);
|
|
}
|
|
|
|
static void __exit sensors_fscher_exit(void)
|
|
{
|
|
i2c_del_driver(&fscher_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Reinhard Nissl <rnissl@gmx.de>");
|
|
MODULE_DESCRIPTION("FSC Hermes driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sensors_fscher_init);
|
|
module_exit(sensors_fscher_exit);
|